The central banks' action came against a background of growing attraction for the dollar, which has risen to the highest levels since early last year.
The decision comes against a background of increased Chinese public utterances on environmental questions.
The violence came against a background of mounting alarm about the Afghan situation.
The warnings have come against a background of nervousness in the financial markets.
Willie's voice came in against a faint background of mush.
The rocky performance of the markets today came against a background of political and economic problems across Europe.
The military strikes today came against a background of diplomatic moves.
The first page of the paper came into view against a background of black.
The conciliatory statements came against a background of heightened tensions and worsening relations between the two countries.
Wit and humor came in flashes against a sorry background of censorship.
